The 2019 Thailand Amateur League (Thai:ไทยแลนด์ อเมเจอร์ลีก) is the third season of the League competition since its establishment in 2017.
It is in the fifth tier of the Thai football league system.
This season has had 230 clubs join the nation-wide amateur tournament.
[1][2] The tournament will be divided into 12 sub-regions with 3 stages in each sub-regions.
Qualification stage: This method will be applied when there are more than eight clubs in a sub-regions.
This can be both one-legged knockout or on a round-robin basis depending on the number of participating clubs in the sub-regions.
Group stage: This round divided eight qualified clubs into two groups and play in single round-robin.
Only the group winners will qualify for the next stage.
Final stage: The groups winners play against each other in one-legged match.
The winners of the sub-region will play in the regional final against the winner from another sub-region which is in the same region to decide the club to promote to 2020 Thai League 4.
30-minute extra time and penalty shoot-out will be applied after the match is still in tie respectively.
Group A1 Group A2
The actual result is a 2-2 draw, but Singh Nuea Chiang Mai was 0-2 forfeited due to fielding an ineligible player.
* Northern Tak United won the first place of the group due to better disciplinary points than PL Tech Pitsanulok.
* Royal Thai Army Headquarters withdraws, so all match which involves Royal Thai Army Headquarters is cancelled, and Phoenix F.C.
qualified to the next round.
*Samut Sakhon Warriors withdraw, so all match which Samut Sakhon Warriors will play is cancelled.
** Saraburi Warriors is forfeited due to fielding ineligible players at the match, the actual result is 2-1 to Saraburi Warriors.
*Samut Sakhon City withdraws, so all match which include Samut Sakhon City is cancelled, and KU Kampang San qualified to the next round.
*Surat Thani United withdrew, so Plai Phraya City and Khun Thalay SRU qualified to group stage.
The actual finalist Singha Nuea Chiang Mai was 0-2 forfeited by JT due to fielding an ineligible player.
According to FA Thailand's declaration about promoting clubs to the 2020 Thai League 4 (T4) by considerate number of participating clubs in each regions, FAT revealed that there will be nine clubs to promote to the next season of T4 League.